Title :
Three-level 1 GS/s digital correlator for wideband polarimetric radiometry
Author :
Piepmeier, J.R. ; Gasiewski, A.J.
Author_Institution :
Sch. of Electr. & Comput. Eng., Georgia Inst. of Technol., Atlanta, GA, USA
Abstract :
A 500-MHz bandwidth, three-level (1.6 bit) digital correlator operating at 1 GS/s was designed and fabricated. The digital circuit is comprised of discrete high-speed silicon emitter-coupled logic components. The use of digital microwave design techniques was necessary to accomplish proper clock distribution, impedance matching, and asynchronous signal propagation. The correlator is to be part of a fully polarimetric radiometer for airborne application. Experimental results from a 400 MS/s prototype polarimetric radiometer are presented.
Keywords :
correlators; emitter-coupled logic; polarimetry; radiometry; 1.6 bit; 500 MHz; Si; airborne application; asynchronous signal propagation; clock distribution; digital circuit; digital microwave design; high-speed silicon emitter-coupled logic; impedance matching; three-level digital correlator; wideband polarimetric radiometry; Bandwidth; Clocks; Correlators; Digital circuits; Logic circuits; Microwave radiometry; Microwave theory and techniques; Signal design; Silicon; Wideband;
Conference_Titel :
Microwave Symposium Digest, 1996., IEEE MTT-S International
Conference_Location :
San Francisco, CA, USA
Print_ISBN :
0-7803-3246-6
DOI :
10.1109/MWSYM.1996.512183
